The yellow one is a school bus. Full size graham cracker, yellow frosting, Oreos for wheels, M&Ms for headlight and tail light, Cinnamon Toast Crunch for windows.
Finally, that pink monstrosity was originally going to be a fire truck. (You can use pretzel sticks to make a ladder and M&Ms for sirens.) But I forgot to grab my can of red frosting, and using red food coloring in white frosting only gives you pink. I even tried to add some chocolate frosting to darken it but that only made it look fushia. Oh well, it's a pink car I guess. The kids didn't mind.
So proud of the finished product!